CN104198196B - Method for detecting equivalent inertia of rotating parts of automobile and engine - Google Patents
Method for detecting equivalent inertia of rotating parts of automobile and engine Download PDFInfo
- Publication number
- CN104198196B CN104198196B CN201410448389.6A CN201410448389A CN104198196B CN 104198196 B CN104198196 B CN 104198196B CN 201410448389 A CN201410448389 A CN 201410448389A CN 104198196 B CN104198196 B CN 104198196B
- Authority
- CN
- China
- Prior art keywords
- automobile
- inertia
- equivalent inertia
- gear
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims description 13
- 230000007935 neutral effect Effects 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 239000002912 waste gas Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 230000008450 motivation Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Landscapes
- Testing Of Engines (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a method for detecting equivalent inertia of rotating parts of an automobile and an engine. The method is characterized in that a twice-sliding method or integrated multi-sliding method is carried out for a chassis power detecting machine of the automobile. The method comprises the following steps: measuring to obtain the equivalent inertia mt of a rack and the equivalent inertia m0 of a neutral-gear power transmission system of a gearbox; switching the automobile to the high gear of the gearbox to reach a high speed; completely releasing an accelerator pedal; remaining the gear of the gearbox together with a clutch; measuring the equivalent inertia of the whole engine power transmission system and the whole rack of the automobile, so as to calculate the rotating inertia Ie of the engine and the equivalent inertia mei of the engine rotating part at different gears of the gearbox; adding m0 and the estimated equivalent inertia mz of a non-drive wheel to obtain the equivalent inertia Mi of the automobile rotating part at different gears of the gearbox. With the adoption of the method, the accuracy in calculation of accelerating resistance of the automobile under the accelerating condition can be improved.
Description
Technical field
Automobile and engine rotation part equivalent inertia detection method, be that automobile uses twice coastdown measurement to send out on chassis dynamometer
After the rotary inertia of motivation, it is calculated automobile and the engine rotation part equivalent inertia of each gear of change speed gear box, belongs to automobile
The technical field of energy detection method.
Background technology
Prior art simulation calculates new model multi-state road formation testing consumption or waste gas discharge, is typically estimation change speed gear box at accelerating mode each
The automobile tumbler equivalent inertia of individual gear, such as GB/T27840-2011 " heavy type commercial vehicle Fuel Consumption measuring method ",
When using the automobile tumbler equivalent inertia of Uniform Formula estimation top gear, the ratio of its relative automobile gross mass is less, causes
Calculating oil consumption or waste gas error the most relatively small, but estimate that when bottom gear automobile tumbler equivalent inertia error is very big, Yi Zao
Become to calculate oil consumption or waste gas error is the biggest.At Chinese invention patent ZL01111406.1 " increase and decrease inertia detection automobile inertia, resistance
And power method " in, reduce that motor is counter drags power for reducing cylinder air pressure, remove the spark plug of electromotor, fuel injector is measured
The equivalent inertia of automobile power-transmission system (containing electromotor), time length, operability are bad.For overcome prior art accuracy and
The deficiency that operability is bad, uses automobile and engine rotation part equivalent inertia detection method, obtains each gear of change speed gear box accurate
Automobile and engine rotation part equivalent inertia, thus improve vehicle and calculate acceleration resistance and oil consumption or waste gas row at accelerating mode
The accuracy put.
Summary of the invention
Automobile tumbler equivalent inertia is equal to the translation car mass of all rotary parts equivalence, starting automobile in running car
Machine flywheel, bent axle, the rotary inertia sum of clutch are referred to as engine moment inertia Ie, IeIt is the definite value of examined vehicle, speed change
The equivalent inertia m of case neutral PWTN0Also being the definite value of examined vehicle, two definite values are unrelated with the gear ratio of change speed gear box gear,
But engine moment inertia IeThe equivalent inertia m of equivalenceeIt is and the gear ratio i of hung change speed gear box geargIt is multiplied by final ratio i0Take advantage of
Long-pending square is directly proportional, and calculates square being inversely proportional to of radius R, i.e. me=i with wheelg 2×i0 2×Ie/R2。
Automobile and engine rotation part equivalent inertia detection method, be that automobile uses on chassis dynamometer freely and loads twice cunning
Row method, twice coastdown of different loading amount, increase and decrease twice coastdown of any of which of twice coastdown of inertia or comprehensively repeatedly slide
Row method, measures the system equivalent inertia of automobile different conditions, thus records engine moment inertia Ie, can be calculated automobile and send out
Motivation is at the tumbler equivalent inertia of each gear of change speed gear box, and its detecting step is as follows:
1, use any one twice taxi procedure, measure the stand equivalent inertia m of chassis dynamometert, mtIt is the definite value of stand,
As indicated, stand equivalent inertia then can use mt, it is not necessary to measure.
2, automobile is on chassis dynamometer, and after extension change speed gear box top gear reaches at a high speed, release the gas pedal hangs neutral, uses arbitrary
Plant twice taxi procedure, measure the equivalent inertia m obtaining automobile gearbox neutral PWTN with stand whole systemh,
Deduct stand equivalent inertia mt, obtain automobile gearbox neutral PWTN equivalent inertia m0=mh-mt。
3, automobile is on chassis dynamometer, after extension change speed gear box top gear reaches at a high speed, loosens accelerator pedal completely, still with clutch
Device also keeps institute's extension change speed gear box gear constant, and engine speed, more than stopping for rotating speed not fuel feeding, uses any one twice taxi procedure,
Measure automobile this top gear gear ratio igEngine rotation part equivalent inertia me and m0、mtThe whole system equivalent of three's sum
Inertia mg=me+m0+mt=ig 2×i0 2×Ie/R2+m0+mt, m in formulag、mt、m0、ig、i0, R be known quantity,
Thus engine moment inertia I can be calculatede=(mg-mt-m0)×R2/(ig 2×i0 2)。
If reducing the deceleration difference slided twice to be likely to result in more greatly engine drag error, can use and comprehensively repeatedly sliding
Method, is i.e. further added by different inertia or constant force loading several times on the basis of twice coastdown and slides.Such as comprehensive three coastdowns,
After twice coastdown, increase once different inertia or constant force loads F and makes deceleration a of whole system3At surveyed a1And a2Between.
As a example by increase and decrease twice coastdown of inertia, a kind of inertia can be changed between twice inertia of stand, make under this stand inertia state
Vehicle art skating deceleration a3At increase and decrease twice coastdown degree a of inertia1And a2Between, thus three equations can be obtained:
mg×a1=f1 ……(1)
(mg+mf1+mf2)×a2=f2+fm1+fm2 ……(2)
(mg+mf1)×a3=f3+fm1 ……(3)
In formula: mgIt is used to for the engine power train of automobile under less stand inertia state and the equivalent of stand whole system
Amount, units/kg；f1It is m under less inertia systemgThe whole system resistance slided, unit N；mf1And mf2It is that stand increases knot
Close the known equivalent inertia of two inertial flywheels, units/kg；fm1And fm2It is known two inertial flywheel resistances, unit N；
f2It is maximum inertia system (mf1+mf2+mg) slide the whole system resistance except flywheel resistance, unit N；f3It is only to increase knot
Unification inertial flywheel except the whole system resistance of flywheel resistance, unit N；Whole system by the most close two equations of deceleration
Resistance approximately equal solves mg；Such as the f in (3) formula3Equal to f1M is obtained afterwards with (1) formula simultaneous solutiong1, then (3) formula
In f3Equal to f2M is obtained afterwards with (2) formula simultaneous solutiong2, take the average conduct of the equivalent inertia of 2 or 3 equation group calculating
mg.In like manner, can slide increasing and decreasing constant force loading of increase between twice coastdown of inertia, or in free and twice cunning of loading
Increase a constant force loading between row method or change inertia slides, or increase once permanent between twice coastdown of different loading amount
Power loads or change inertia slides, and can carry out comprehensive repeatedly coastdown by that analogy.
4, automobile gearbox difference gear gear ratio i is calculatedcEngine rotation part equivalent inertia mei=ic 2×i0 2×Ie/R2, can
To estimate the equivalent inertia m of non-driving wheelz=δ × (n × m0/ N), in formula, n is non-driven wheel number, and N is driving wheel number,
δ is main transmission structure coefficient, generally can select in (0.7～1.0) scope, and single-stage main transmission takes value bigger than normal, twin-stage main transmission
Or wheel limit transmission takes value less than normal, mzIt is the definite value of examined vehicle, calculates the automobile tumbler equivalent inertia M that change speed gear box respectively keeps offi=mei
+m0+mz, units/kg.
Automobile and engine rotation part equivalent inertia detection method, be that automobile uses twice coastdown on chassis dynamometer, measures
Each gear automobile of change speed gear box and the detection method of engine rotation part equivalent inertia, it is characterised in that: use freely and load two
Secondary coastdown, twice coastdown of different loading amount, any of which method of increase and decrease twice coastdown of inertia, first measure and obtain platform
Frame equivalent inertia mtWith automobile gearbox neutral PWTN equivalent inertia m0, mtIt is the definite value of stand, m0It it is examined vehicle
Definite value, the gear ratio of two definite values gear different from automobile gearbox is unrelated, and then automobile hangs change speed gear box at a high speed on chassis dynamometer
Gear reaches after at a high speed, is totally released accelerator pedal, still with clutch and keep institute's extension change speed gear box gear constant, measures automobile
The equivalent inertia m of engine power train and stand whole systemg, or in order to reduce the deceleration difference slided twice
It is likely to result in more greatly engine drag error, comprehensive repeatedly coastdown can be used, be further added by between the deceleration of twice coastdown
Change inertia or constant force calculate average m after loading and sliding several timesg；It is calculated engine moment inertia Ie=(mg-mt-m0)×
R2/(ig 2×i0 2), in formula: igBy the gear ratio of extension change speed gear box top gear, i0For final ratio, R is that wheel calculates radius,
Can be calculated automobile gearbox difference gear gear ratio icEngine rotation part equivalent inertia mei=ic 2×i0 2×Ie/R2, estimation
Non-driving wheel equivalent inertia mz, mzIt is the definite value of examined vehicle, the automobile tumbler equivalent inertia M of different change speed gear box gear can be obtainedi=
mei+m0+mz, thus improve automobile difference change speed gear box gear and calculate the accuracy of acceleration resistance at accelerating mode.Automobile and send out
The technological merit of motivation tumbler equivalent inertia detection method is as follows:
(1) diesel vehicle or electric-controlled gasoline car, at idle position after being totally released accelerator pedal, in taxiing procedures, when starting
Machine rotating speed stops for fuel cut-off during rotating speed more than idling.In any twice coastdown, the vehicle setting identical speed point is sent out
Motivation PWTN and whole system self resistance all approximately equals of stand, use the test of change speed gear box top gear, it can be ensured that
Slide the engine speed measuring vehicle speed intervals to stop for rotating speed more than idling, it is to avoid engine oil causes resistance error.
(2) it is generally difficult to measure m at bottom gearg, due to IeBeing the definite value of examined vehicle, mei is and power transmission system of vehicle
Gear ratio square be directly proportional, can calculate mei and test without the many gears of change speed gear box, make test accurate, convenient, fast.
(3) compare the coasting time of three kinds of twice taxi procedures, bigger resistance can be produced in conjunction with the taxiing procedures going up electromotor and bear
Lotus, the longest then certainty of measurement of coasting time that vehicle speed intervals determined by institute's gauge is the highest, in three kinds of twice cunnings of identical elementary inertia stand
In row method, the coasting time of increase and decrease twice coastdown of inertia is the longest, precision is the highest.If increase and decrease twice coastdown of inertia or comprehensive
Close repeatedly coastdown not have constant force to load to slide, chassis dynamometer can without device for power absorption, having can the inertial flywheel of clutch.
(4) comparing the loading force precision of three kinds of twice taxi procedures, increase and decrease twice coastdown of inertia is without loading force, the most not by car
Vibrating the impact on force transducer on stand, precision is the highest, remaining two kinds of method all by force transducer precision, control to add
Carrying precision and the impact of force transducer vibration force, reduce precision, loading force need to deduct vehicle vibration force on stand.
(5) transmission neutral PWTN equivalent inertia m0Mainly drive the equivalent inertia of wheel, power transmission shaft and main transmission
Mechanism's equivalent inertia proportion is little, and the equivalent inertia error of non-driven wheel is little to use coefficient δ to estimate, margin of error phase
Minimum to the ratio of vehicular gross combined weight, negligible.
Detailed description of the invention
As a example by an automobile uses increase and decrease twice coastdown of inertia to measure on chassis dynamometer, illustrate that automobile and electromotor turn
The detailed description of the invention of moving part equivalent inertia detection method:
(1) automobile five keeps off the gear ratio of change speed gear box and is respectively i1=6.11, i2=3.24, i3=2.19, i4=1.47, i5=1.0, footmark
For change speed gear box gear, single-stage main transmission, final ratio i0=4.88, it is 0.496m that wheel calculates radius R, and automobile has 4 to drive
Driving wheel, 2 deflecting rollers.
(2) the inertia m on known chassis dynamometer nameplatet=906kg, automobile, on chassis dynamometer, hangs change speed gear box top gear
After reaching at a high speed, release the gas pedal hangs neutral, uses increase and decrease twice coastdown of inertia, and measurement obtains automobile gearbox neutral and moves
Power power train and the equivalent inertia m of stand whole systemhFor 1149kg, deduct stand equivalent inertia mt, obtain automobile and become
Speed case neutral PWTN equivalent inertia m0=mh-mt=1149-906=243kg.
(3) automobile hangs up after directly gear (five gears) reaches at a high speed on chassis dynamometer, is totally released accelerator pedal, still with
It is constant that clutch keeping is hung directly gear, uses increase and decrease twice coastdown of inertia or comprehensive the most repeatedly coastdown, measures car engine
The equivalent inertia m of mechanomotive force power train and stand whole systemgFor 1364kg, obtain engine moment inertia Ie=(mg
-mt-m0)×R2/(ig 2×i0 2)=(1364-243-906) × 0.4962/(12×4.882)=2.221kg m2。
(4) the engine rotation part equivalent inertia mei=i of automobile gearbox difference gear gear ratio is calculatedc 2×i0 2×Ie/R2,
me1=6.112×4.882×2.221/0.4962=8026kg, in like manner calculates me2=2257kg, me3=1031kg, me4=465kg,
me5=215kg, footmark is change speed gear box gear.
(5) N of vehicle be equal to 4, n be equal to 2, desirable δ=0.9 of single-stage main transmission, the equivalent inertia m of non-driving wheelz=δ ×
(n×m0/ N)=0.9 × (2 × 243/4)=109kg, by change speed gear box difference gear automobile tumbler equivalent inertia Mi=mei+
m0+mz=mei+ 243+109 calculate, change speed gear box one keep off to five gear automobile tumbler equivalent inertias be respectively as follows: M1=8378kg,
M2=2609kg, M3=1383kg, M4=817kg, M5=567kg, footmark is change speed gear box gear.
Automobile and engine rotation part equivalent inertia detection method, have and detect the advantages such as accurate, convenient, fast, be greatly improved
New model type approval calculates acceleration resistance and oil consumption or the accuracy of waste gas discharge at accelerating mode.
Claims (1)
1. automobile and engine rotation part equivalent inertia detection method, is that automobile uses twice coastdown on chassis dynamometer, surveys
Amount each gear automobile of change speed gear box and the detection method of engine rotation part equivalent inertia, it is characterised in that: use freely and load
Twice coastdown, twice coastdown of different loading amount, any of which method of increase and decrease twice coastdown of inertia, first measure and obtain
Stand equivalent inertia mt and automobile gearbox neutral PWTN equivalent inertia m0, mtIt is the definite value of stand, m0It it is examined vehicle
Definite value, the gear ratio of two definite values gear different from automobile gearbox is unrelated, and then to hang change speed gear box on chassis dynamometer high for automobile
Speed gear reaches after at a high speed, is totally released accelerator pedal, still with clutch and keep institute's extension change speed gear box gear constant, measures automobile
Engine power train and the equivalent inertia m of stand whole systemg, or in order to reduce the deceleration phase slided twice
Difference is likely to result in more greatly engine drag error, can use comprehensive repeatedly coastdown, increase between the deceleration of twice coastdown again
Add change inertia or constant force loading several times and calculate m after slidinggiAverage as mg；It is calculated engine moment inertia Ie=(mg
-mt-m0)×R2/(ig 2×i0 2), in formula: igBy the gear ratio of extension change speed gear box top gear, i0For final ratio, R is car
Wheel calculates radius, can be calculated automobile gearbox difference gear gear ratio icEngine rotation part equivalent inertia mei=ic 2×i0 2
×Ie/R2, estimation non-driving wheel equivalent inertia mz, mz are the definite values of examined vehicle, and the automobile that can obtain different change speed gear box gear rotates
Part equivalent inertia Mi=mei+m0+mz, thus improve automobile difference change speed gear box gear and calculate the standard of acceleration resistance at accelerating mode
Really property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410448389.6A CN104198196B (en) | 2014-08-28 | 2014-08-28 | Method for detecting equivalent inertia of rotating parts of automobile and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410448389.6A CN104198196B (en) | 2014-08-28 | 2014-08-28 | Method for detecting equivalent inertia of rotating parts of automobile and engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104198196A CN104198196A (en) | 2014-12-10 |
| CN104198196B true CN104198196B (en) | 2017-01-11 |
Family
ID=52083523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410448389.6A Expired - Fee Related CN104198196B (en) | 2014-08-28 | 2014-08-28 | Method for detecting equivalent inertia of rotating parts of automobile and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104198196B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226083B (en) * | 2016-08-12 | 2018-10-19 | 中检西部检测有限公司 | Engine test dynamic analog dynamometer machine and its road resistance analogy method |
| CN106989938A (en) * | 2017-05-05 | 2017-07-28 | 吴明 | Loading and inertia detect vehicle dynamic quality method |
| CN107782498B (en) * | 2017-10-10 | 2020-10-02 | 中国石油集团川庆钻探工程有限公司 | System and method for measuring equivalent rotational inertia of diesel engine |
| CN110702309A (en) * | 2019-11-04 | 2020-01-17 | 山东交通学院 | Vehicle inertia checkout stand with clutch |
| CN112284756B (en) * | 2020-09-30 | 2021-11-02 | 东风汽车集团有限公司 | A test method for dynamic resistance of vehicle transmission system |
| CN113281061B (en) * | 2021-05-23 | 2023-06-27 | 朱卫萍 | Verification method for detecting loading force of automobile under steady-state working condition |
| CN115096507A (en) * | 2022-05-10 | 2022-09-23 | 中国第一汽车股份有限公司 | A method for measuring the moment of inertia of a passenger car drive train |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6345542B1 (en) * | 1997-06-23 | 2002-02-12 | Kabushiki Kaisha Meidensha | Running resistance control apparatus of chassis Dynamometer |
| CN1525150A (en) * | 2003-08-03 | 2004-09-01 | 明 吴 | Method for equivalent simulation detection of automobile sliding distance on chassis dynamometer |
| CN1598523A (en) * | 2004-08-28 | 2005-03-23 | 吴明 | Systematic test method for car bench test simulating road test load under multiple working conditions |
| CN102589899A (en) * | 2012-02-20 | 2012-07-18 | 吴明 | Vehicle bench test simulation road test transient condition loading method |
| CN103398849A (en) * | 2013-08-08 | 2013-11-20 | 吴明 | Idle Speed Calibration Method for the Relationship between Vehicle Speed and Engine Speed |
| CN103604542A (en) * | 2013-07-10 | 2014-02-26 | 中国第一汽车股份有限公司 | Measuring device and measuring method for vehicle transmission system resistance |
-
2014
- 2014-08-28 CN CN201410448389.6A patent/CN104198196B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6345542B1 (en) * | 1997-06-23 | 2002-02-12 | Kabushiki Kaisha Meidensha | Running resistance control apparatus of chassis Dynamometer |
| CN1525150A (en) * | 2003-08-03 | 2004-09-01 | 明 吴 | Method for equivalent simulation detection of automobile sliding distance on chassis dynamometer |
| CN1598523A (en) * | 2004-08-28 | 2005-03-23 | 吴明 | Systematic test method for car bench test simulating road test load under multiple working conditions |
| CN102589899A (en) * | 2012-02-20 | 2012-07-18 | 吴明 | Vehicle bench test simulation road test transient condition loading method |
| CN103604542A (en) * | 2013-07-10 | 2014-02-26 | 中国第一汽车股份有限公司 | Measuring device and measuring method for vehicle transmission system resistance |
| CN103398849A (en) * | 2013-08-08 | 2013-11-20 | 吴明 | Idle Speed Calibration Method for the Relationship between Vehicle Speed and Engine Speed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104198196A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104198196B (en) | Method for detecting equivalent inertia of rotating parts of automobile and engine | |
| JP6340399B2 (en) | Apparatus and method for determining engine load reporting strategy | |
| CN104198005B (en) | Automobile multi-state the examination of road oil consumption simulation calculates detection method | |
| Fajri et al. | Equivalent vehicle rotational inertia used for electric vehicle test bench dynamic studies | |
| CN102323206B (en) | Method for measuring rolling resistance coefficient of vehicle | |
| CN101482438B (en) | Method for detecting equivalent torque dynamic property of automobile | |
| CN107907345B (en) | The detection method of power of vehicle inertia platform examination | |
| CN107490492B (en) | Load and inertia detect vehicle dynamic quality method | |
| CN110646223B (en) | Measurement system for instantaneous output power of vehicle drive wheels | |
| CN102305715A (en) | Dynamic load simulating device and method for automobile power system test | |
| CN101706300B (en) | Detection method of vehicle fuel consumption rate at constant speed and full load | |
| CN110646224B (en) | Method for measuring instantaneous output power of vehicle drive wheels | |
| CN1598523A (en) | Systematic test method for car bench test simulating road test load under multiple working conditions | |
| CN102589899B (en) | Vehicle bench test simulation road test transient condition loading method | |
| CN103398849B (en) | The idling scaling method of the speed of a motor vehicle and engine speed relationship | |
| CN102322998B (en) | Method for measuring inner frictional resistance of vehicle | |
| CN105157991B (en) | Wheel drive surfaces output regulation power loading detection method | |
| CN100430709C (en) | Automobile multi-function analog loading detection device | |
| CN100504119C (en) | Method for estimating vehicle deceleration during transmission shifts | |
| CN101963519B (en) | Detection method of fuel consumption in bench test simulated road test standard state | |
| CN105258830B (en) | Automobile drive wheel surface power output detection method | |
| CN1102236C (en) | Method for detecting efficiency of automobile chassis transmission system by sliding calibration | |
| CN1441237A (en) | Simulation Loading Method of Automobile Multi-Working Conditions on Chassis Dynamometer | |
| CN107560860B (en) | Vehicle in use road test detects engine power method | |
| CN1111730C (en) | Method for detecting automobile power through inertia bench test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221213 Address after: 276000 NO.119 Jinhu Industrial Park, West Jiefang Road, high tech Zone, Linyi City, Shandong Province Patentee after: Luyake Fire Vehicle Manufacturing Co.,Ltd. Address before: 528415, Xiaolan Town, Xiaolan Town, Zhongshan, Guangdong, No. 16 vehicle Siu Lam inspection station Patentee before: Wu Ming |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |